Water could be made
to boil at 105 degrees Celsius instead of 100 degrees Celsius by taking
the sample to a higher altitude. Pressure is directly proportional to
temperature. So when you bring water into higher altitude, you are increasing
the external pressure and therefore increase the boiling point.
Benzene lacks a polar O-H bond, but ethanol does. Benzene C6H6 with ethanol C2H6O.
Benzene fails the iodoform test, whereas ethanol does.
While ethanol burns with a non-luminous flame, benzene produces a sooty flame.
Iodoform testing shows that ethanol passes whereas benzene does not.
In contrast to benzene, which generates a sooty flame, ethanol burns with a non-luminous flame.
Water does not mix with benzene, but organic solvents do.
It is a colorless liquid with a pleasant scent.
Benzene has a high melting point and a moderate boiling point.
It burns with a sooty flame and is quite flammable.
A clear, colorless liquid, ethanol has a distinct flavor of burning with a nice aroma. It has high flammability. Ethanol combines easily with water and a variety of organic liquids and is used to dissolve other chemical compounds.
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Blank #1: Polyatomic
Blank #2: 2 (see explanation)
Blank #3: 1 (see explanation)
<h3>Explanation</h3>
Both the ammonium ion 
and the sulfate ion 
contain more than one atom in each ion. The two species are thus <em>polyatomic</em>. The chloride ion 
, for example, is <em>monoatomic</em>.
Superscripts above formulae of the ions indicate their charge. Each ammonium ion carries a positive one (+1) charge. Each sulfate ion carries a charge of negative two (-2).
Ammonium sulfate is an ionic compound. A sample of this compound contain myriads of ammonium ions and sulfate ions. The ions are packed in three-dimensional lattices. Thus unlike water, ammonium sulfate does not exist as molecules in nature.
Assuming that the second and third blanks refers to a formula unit, rather than a molecule, of ammonium sulfate. The empirical formula of ammonium sulfate gives the minimum whole-number ratio between the two ions in a sample.
Charges shall balance between the two ions. Ammonium ions are of charge +1. Sulfate ions are of charge -2. The sample shall thus contain two ammonium ions for every one sulfate ion.
The empirical formula of ammonium sulfate is therefore 
.
There are thus two ammonium ions and one sulfate ion in each formula unit of ammonium sulfate.
Answer:
71.5 %
Explanation:
mercury + bromine ⟶ compound
Mass/g: 60.2 24.0
According to the <em>Law of Conservation of Mass</em>, the mass of the product must equal the mass of the reactants
Mass of product = 60.2 + 24.0
Mass of product = 84.2 g
The formula for <em>percent composition</em> is
% by mass = mass of component/total mass × 100 %
% Hg = 60.2/84.2 × 100
% Hg = 0.7150 × 100
% Hg = 71.5 %
